Adsorption structure and doping effect of azidotrimethyltin on graphene

► We elucidate the exact adsorption site (bridge site) on monolayer EG by the interaction through [2 + 1] cycloaddition reaction with scanning tunneling microscope. ► We also confirmed C (graphene)-N (nitrene) bonding feature using high resolution photoemission spectroscopy. ► We find that nitrene being included in ATMT molecule acts as n-type dopant on EG.